Odpowiedzi

2010-03-25T22:17:41+01:00
50%x +10%x+ 20%x +6=
80%x=6 /:80
x=0,075
2010-03-25T22:17:43+01:00
50%x +10%x+ 20%x +6= 0

80%x=-6 |/80%
x=-7,5
2010-03-25T22:18:06+01:00
50%x +10%x+ 20%x +6= 0
0,5x+0,1x+0,2x = -6
0,8x = -6 / :0,8
x = -7,5